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[IPV4]: Add 'rtable' field in struct sk_buff to alias 'dst' and avoid casts

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(Anonymous) unions can help us to avoid ugly casts.

A common cast it the (struct rtable *)skb->dst one.

Defining an union like  :
union {
     struct dst_entry *dst;
     struct rtable *rtable;
};
permits to use skb->rtable in place.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2008-03-05 18:30:47 -08:00
committed by David S. Miller
parent a05c44f6d5
commit ee6b967301
23 changed files with 69 additions and 68 deletions
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4
net/ipv4/arp.c
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@@ -475,7 +475,7 @@ int arp_find(unsigned char *haddr, struct sk_buff *skb)
return 1;
}
paddr = ((struct rtable*)skb->dst)->rt_gateway;
paddr = skb->rtable->rt_gateway;
if (arp_set_predefined(inet_addr_type(&init_net, paddr), haddr, paddr, dev))
return 0;
@@ -814,7 +814,7 @@ static int arp_process(struct sk_buff *skb)
if (arp->ar_op == htons(ARPOP_REQUEST) &&
ip_route_input(skb, tip, sip, 0, dev) == 0) {
rt = (struct rtable*)skb->dst;
rt = skb->rtable;
addr_type = rt->rt_type;
if (addr_type == RTN_LOCAL) {